Question

stating why false positive matters to you (i.e., why you need to be careful) when driving a car with AEB system.

Answer 1

Ans. The AEB system is a feature found in modern cars, which can alert the driver of an imminent crash, and also helps him/her in using the maximum breaking capacity of the car fully. When no human response is there, AEB will brake independently. The 3 categories of AEB system include:

Pedestrian system: detects the movements of pedestrians concerning the car's path, to determine collision's risk.

High-speed system: long-range radars are used for detecting the movement of pedestrians up to around 200 meters ahead.

Low-speed system: may work on the streets in the city for preventing crashes with other vehicles and cars that are in front of the car, and avoid the minor and non-life-threatening situations as well.

While AEB systems do reduce accidents and collisions, there are some risks associated with their use also. When automated brakes exert a force greater than what is required, accidents may happen. Cars with AEB will decelerate faster and sometimes without a reason (due to an error with the automated braking system). When the deceleration or stopping of the car occurs without a reason, it is termed as "false positive". In these cases, those following the car may be exposed to risk along with the car passengers themselves, as a collision may occur at the "rear end". This is also a frequent scenario found in buses with AEB systems. With the application of AEB's, the buses decelerate faster when compared to a driver-initiated deceleration. This increases the risk for the passengers of the bus, who may fall, and for the other drivers and vehicles following the bus.